I use HulloMail. I've used it with my S3 and now my Note 3. It's free. There is a pd version that removes the ads at the bottom but the ad ticker at the bottom isn't intrusive at all. At least not to me. You can always try it & see if you like it. I know one big drawback to AT&T's visual voicemail was that it didn't work over Wi-Fi so if you were at home on your Wi-Fi, you wouldn't get any voicemail notifications. Or at least this was the main deciding factor when I chose to go with HulloMail. They may have fixed it by now, but I don't care for their messaging app or any of their other apps either. They don't seem to be very well thought out from our end. Hope you find what works for you!
Good luck!
Sent from my SAMSUNG GALAXY NOTE 3 using AC Forums mobile app